Section 83.16. County may contract with foreign county.

  The board of supervisors of any county in this state bordering on any stream or highway which is the boundary line between such county and a county in another state is authorized in conjunction with the board of supervisors of such adjoining county in such other state, to construct and maintain a bridge or bridges across such river at a place or places within the limits of such county or reconstruct such highway including its bridges as may be agreed upon by the respective boards of supervisors, whenever said board of supervisors deems it necessary, and to enter into a contract with such board of supervisors of the adjoining county of such other state for the construction, maintenance and repair of such bridges or highway.